Adjustable book-support.



B. T. PHELPS. I ADJUSTABLE BOOK SUPPORT.

- APPLICATION FILED DEC. 8, 1908.

Patented Oct. 12, 1909.

B .5 gmgizwtoz GHMMM book rack or support which may be adjusted To allwhom it may concern.

hook-supporting frame may be detached from the'supporting rod and the various responding parts in all the figures of the UNITED rarest. oFFIoE BAILIE r. memes, or NATGHITQGHES, waistline.

angus'raam Hoax-sorrow.

firecific i n o Let rs latent Patented Oct. 12, 19.09.

Application ple d December 1%}08. Serial No. 6,533.

3 it k ows ha 1, Beam ism, 3 iz n o th t me; States, re iding atet ita h n t e Per h atNe-t hit h d ate o ouis ana, hav nv nt d a n w n usef mpr v ment i Adjust l Book-Supports, of which thefo llowing is a specification.

My invention relates to hook sup ,orts, particularly to that character of boo: support Whereinthe book rack is adjnstably clamped to a chair or other article vof furniture, the object of'my invention being to, provide a n variou angu ar d re tions a ay adjusted vertically, nd in which the inl na ion of e ra may b r j s ab y varied, Y

A other object of my invention is to proyide a support of the constriiction ahove referred .to with means whereby therack or parts of the mechanism disassembled from each other for packing.

. My invention provides a W91? .portwhich nary be easily put together, quickly set up, will hold the booii or other object in the adjusted position withcut chance of accidental movement, and in which the parts may be readily detached from each other.

My invention consists in the arrangement of parts and details of construction shown in the accompanying drawings and particularly specified in the appended claims.

In the drawings, Figure 1 is a perspective view of my support claluped'upon a chair frame; Fig. 2 1s a transverse section of the book rack and a portion of the chair frame, the crank arm being in elevation; Fig. 3 is a rear face view ofthe book-supporting rack showing its attachment to a supporting standard; Fig. 4 is a fragmentary enlarged detail showing a modified form of clamping arrangement.

Similar reference numerals designate cordrawings.

In the drawings, 2 designates a book rack or supporting plate, preferably of sheet metal cut out in any desired ornamental form and provided at its bottom edge with projecting flanges, 3, These flanges may be made'in onepiece across the entire lower edge of the rack 2,,or may be made in three separate flanges, as shown. The rear face lQf the rack plate, 2, is provided with inwardly-turned opposed flan es, 4, forming a socket for the reception 0 a bracket con- 1 sistlng of a plate, 5, on a sector-shaped fin 6. The plate 5' tapers to fit in the socket and the weight of the rack serves to hold the plate engaged in the socket without the use of fastenings, and, at the same time, permits the rack to'be readily detached. a

It will be seen from Fig. 3 that the flanges 4, are formed by bending back a portion of the metal of the rack plate :2, on'either side of the middle thereof. These flanges are 1,eferab ly inclined outward or diverge oward the hcttom of the rack plate for the easy insertion of the plate 5. ThlS plate 5 has preferably rounded sides and beveled forward edges so as to adapt it for easy insertion between the flanges 4, in the position shown in Fig. 1, and so that when inserted, the rack 2 may be torced downward to bring its flanges 4 into tight engagement with the plate 5. Projec ing downward from the griddle the plate 5' is the sector-shaped fin which is pivoted at 8 to a head 9, screwthreaded into the up or end of a standard, 10, the head being s otted as at 11, to rec ve th p1at 12 dfi i mates a set screw which passes through t e side of the slotted head 9, and

whose point engages with the plate 6. EV.

sired.

The standard 10 is tubular and is provided at its lower end with a set screw 13. The standard 10 is adapted to receive the upper end of a crank-shaped rod 14. By unloosening the set screw 18, the tubular standard, I

10, may be turned around upon the upper portion 14 of the rod 14 to the desired angle, the set screw being then turned to clamp it firmly in position. The lower end 14 of the rod 14 is received in a sleeve 15, which, in the form of my invention shown in Figs. 1 and 2, held in a clamp body 16. A se t' screw l'Tpasses through the end of this clamp body, projects through the sleeve and contactswith the downwardly-extendii g end :14 of the rod 14. It will be seen that this permits the rod 14 to be rotated to any deslrd position within the sleeve 15 and to be then held by means of the set screw 17 bifurcated so as to embrace an arm A, of a chair between its upper and lower members. The lower member is provided with aclamp screw 19, the inner end of which is swiveled to a wear plate 20, provided with pins 21 which project through holes in the lower member of the clamp 14, and hold the plate 20 from turning. It will be seen that this construction prevents any wear upon the chair and yet provides for the very rigid clamping support of the book rest.

In Fig. 4 I show a modified form of clamp construction and support, which is adapted to engage with a leg or any other member of the chair, which is round in cross section. Said member is shown by t-he dotted lines. This modified form of clamp comprises ele- Y ments which are in many ways similar to the elements previously described. It consists of a clamp body, 22, formed at one end with a sleeve, 23, which sleeve is provided with a set screw, 2 projecting through the sleeve and engaging with a tubular cranked sup orting rod 25. In order to assist in hol ing the rod 25 from any vertical downward movement in the sleeve 23, I provide an adjustablestop 26, in the form of a movable sleeve'which surrounds the rod 25, and is held thereon at any desired place by the set screw 27. This stop 26 may be adjusted. up or down upon therod 25. When set by the set screw, of course, it is impossible to force the rod 25 farther down within the sleeve 26, which will abut against the edge of the sleeve 23 and assist the set screw 24, in holding the rod in its adjusted position. At its other end, the clamp 22 is formed with oppositely-projecting arms, 28, on one of which the clamping member 29 ispivoted. The other end of this clamping member 29 is provided with a projecting lug 30, adapted to contact with a lug 31 and be held in enga ement therewith by the screw 32. It will e seen that a rotation of the screw'32 will close the member 29, thus binding the clamp upon the post of the chair or other article of furniture A set screw 25 binds the lower end of crank arm 14 in the upper end of crank arm 25. A lining sleeve, 33, ofleather, rubber, felt, on any other desired material prevents the clamp from marring.

the furniture to which the su port is attached.

My-inventionis extremely simple, provides for adjustment in any position desired of the book rack, cannot readily become accidentally loose, and, as before remarked, can be readily taken apart.

The double cranks 14 and 25 provide for an easy adjustment of the rack to the exact positiondesired, and adapt the device to be used on either side of a chair. The rod 25 may be easily adjusted for height-and then set securely in place -while the crank arm 14 may, if desired, be left free to be swung back or may be clamped at any convenient angle.

From the foregoing, it is thought that the construction, operation and many 'advantages of the herein described invention will be apparent to those skilled in the art without further description, and it will be under stood that various changes in the size, shape, proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, what I claim as new and desire to secure by Lettors-Patent, is:

1. In a book support, the combination of a rack having integral flanges bent backwardly and inwardly toward each other to form an upwardly-tapering socket, a bracket having a plate fitted in the socket and provided with a rearwardly-extending fin, a. standard, a pivot connecting the standard with the fin, and a clamping device between the fin and standard for holding the rack in difierent positions of adjustment.

2. In a book support, a book rack having opposed inwardly turned flanges, a plate extending at right-angles to the rack, and havadapted to be received between the inwardlyextending flanges of the rack, a standard bifurcated at its upper end, said plate forming a fin pivoted on the bifurcated end of the said standard and projecting from the rack, a set screw for holding the fin and standard in different angular relations, a crank-shaped arm theupper end of which is adapted to be engaged with the standard. and a set screw for holding the standard adjusted upon the end of the crank-shaped arm, a member adapted to be engaged with a piece of furniture and having a'tubular recess into which the lower end of the crankshaped arm is received, and a set screw passing through said member and engaging the end of said arm. 7

In testimony, that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

BAILIE T. PHELPS.

100 ing opposed outwardly-extending fianges- 

